From 879e86b20efa693103ef09882f2663197fae550e Mon Sep 17 00:00:00 2001
From: zarzet <42882290+zarzet@users.noreply.github.com>
Date: Sun, 11 Oct 2026 16:14:01 +0700
Subject: [PATCH] test(rust): remove TCP timing dependence from chunked fixture

---
 rust_backend/crates/extensions/tests/optimization_chunked.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rust_backend/crates/extensions/tests/optimization_chunked.rs b/rust_backend/crates/extensions/tests/optimization_chunked.rs
index 50cc6424..83910266 100644
--- a/rust_backend/crates/extensions/tests/optimization_chunked.rs
+++ b/rust_backend/crates/extensions/tests/optimization_chunked.rs
@@ -33,6 +33,9 @@ fn respond(stream: &mut TcpStream, head: &str, body: &[u8]) -> std::io::Result<(
 /// Serves byte ranges over keep-alive HTTP/1.1. `/busy` answers the first
 /// ranged chunk (after the two-byte probe) with a small retryable 503 body.
 fn connection(mut stream: TcpStream, stop: &AtomicBool, busy: &AtomicBool) {
+    // Keep the fixture's 3 ms body delay independent of Nagle/delayed ACK,
+    // which can exceed the client's bounded drain on Linux runners.
+    stream.set_nodelay(true).unwrap();
     stream
         .set_read_timeout(Some(Duration::from_millis(25)))
         .unwrap();